Create and test a user-defined function named ufnFullName that combines the values of the two parameters named FirstName and LastName into a concatenated name field FullName, which is formatted as FirstName LastName (including a space between FirstName and LastName)

   public static String ufnFullName(String Fname, String Lname){

       String FullName = Fname+" "+Lname;

       return  FullName;

   }

Explanation:

Using Java programming language, the function is created to accept two String parameters (Fname and Lname)

These are concatenated into a new String FullName and returned by the function

See below a complete code that prompts users to enter value for first and last names then calls this method to display the full name

import java.util.Scanner;

public class FullName {

   public static void main(String[] args) {

       System.out.println("Enter First Name");

       Scanner in = new Scanner(System.in);

       String Fname = in.next();

       System.out.println("Enter Last Name");

       String Lname = in.next();

       System.out.println("Your Full Name is "+ufnFullName(Fname,Lname));

   }

   public static String ufnFullName(String Fname, String Lname){

       String FullName = Fname+" "+Lname;

       return  FullName;

   }

}

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